EP3744560A1 - Elektrofahrzeug - Google Patents

Elektrofahrzeug Download PDF

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Publication number
EP3744560A1
EP3744560A1 EP20177141.7A EP20177141A EP3744560A1 EP 3744560 A1 EP3744560 A1 EP 3744560A1 EP 20177141 A EP20177141 A EP 20177141A EP 3744560 A1 EP3744560 A1 EP 3744560A1
Authority
EP
European Patent Office
Prior art keywords
reverse
mode
operating member
vehicle
driving
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP20177141.7A
Other languages
English (en)
French (fr)
Other versions
EP3744560B1 (de
Inventor
Hisashi Murase
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yamaha Motor Co Ltd
Original Assignee
Yamaha Motor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yamaha Motor Co Ltd filed Critical Yamaha Motor Co Ltd
Publication of EP3744560A1 publication Critical patent/EP3744560A1/de
Application granted granted Critical
Publication of EP3744560B1 publication Critical patent/EP3744560B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J50/00—Arrangements specially adapted for use on cycles not provided for in main groups B62J1/00 - B62J45/00
    • B62J50/20—Information-providing devices
    • B62J50/21—Information-providing devices intended to provide information to rider or passenger
    • B62J50/22—Information-providing devices intended to provide information to rider or passenger electronic, e.g. displays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K11/00—Motorcycles, engine-assisted cycles or motor scooters with one or two wheels
    • B62K11/14—Handlebar constructions, or arrangements of controls thereon, specially adapted thereto
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K23/00—Rider-operated controls specially adapted for cycles, i.e. means for initiating control operations, e.g. levers, grips
    • B62K23/02—Rider-operated controls specially adapted for cycles, i.e. means for initiating control operations, e.g. levers, grips hand actuated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M7/00—Motorcycles characterised by position of motor or engine
    • B62M7/02—Motorcycles characterised by position of motor or engine with engine between front and rear wheels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/02—Selector apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
    • F16H61/0202—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric
    • F16H61/0204—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
    • F16H61/0213—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal characterised by the method for generating shift signals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/10—Road Vehicles
    • B60Y2200/12—Motorcycles, Trikes; Quads; Scooters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/90—Vehicles comprising electric prime movers
    • B60Y2200/91—Electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K2204/00—Adaptations for driving cycles by electric motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/02—Selector apparatus
    • F16H2059/0239—Up- and down-shift or range or mode selection by repeated movement
    • F16H2059/0243—Up- and down-shift or range or mode selection by repeated movement with push buttons, e.g. shift buttons arranged on steering wheel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/02—Selector apparatus
    • F16H2059/0256—Levers for forward-reverse selection only, e.g. for working machines having a separate lever for switching between forward and reverse mode
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility

Definitions

  • the present disclosure relates to an electric vehicle and a method for controlling an electric vehicle capable of reverse driving.
  • JP 2010-120597 A and JP 2015-194213 A disclose a vehicle having a reverse mode allowing reverse driving.
  • the vehicle of JP 2010-120597 A sets the driving mode thereof to the reverse mode by pressing the reverse switch for the predetermined period of time.
  • the reverse switch is pressed during the reverse mode, the reverse driving is executed, and when the accelerator grip is operated, the forward driving is executed.
  • the forward driving when the vehicle speed in the forward direction exceeds the threshold value, the reverse mode is automatically released.
  • the vehicle of JP 2015-194213 A sets the driving mode thereof to the reverse mode when the shift-up switch and the shift-down switch are simultaneously pressed.
  • the reverse mode the forward driving is executed when the shift-down switch is operated, and the reverse driving is executed when the shift-up switch is operated.
  • the operation mode returns to the normal mode.
  • An object of the present disclosure is to provide an electric vehicle and a method for controlling an electric vehicle that can prevent a driver from being confused about whether an electric vehicle is still in a reverse mode after a reverse driving. According to the present invention said object is solved by an electric vehicle according to claim 1 or 13 and/or a method for controlling an electric vehicle according to claim 15. Preferred embodiments are laid down in the dependent claims.
  • attitude stability of a vehicle body in reverse driving of a vehicle can be improved.
  • an electric motorcycle 1 will be described as an example of an electric vehicle.
  • the present disclosure may be applied to an electric four-wheeled vehicle, an electric three-wheeled vehicle, an electric snow vehicle, for example.
  • the electric motorcycle 1 has a rear wheel 5 that is a driving wheel, and an electric motor 6 that drives the rear wheel 5.
  • the torque (rotation) of the electric motor 6 is transmitted to the rear wheel 5 via a speed reduction mechanism (not shown) and a transmission member (e.g., chain, belt, shaft), for example.
  • the electric motorcycle 1 has a battery 8 for storing electric power to be supplied to the electric motor 6.
  • the battery 8 may be detachably attached to the vehicle body.
  • the battery 8 is disposed at the center of the vehicle body, and the electric motor 6 is disposed below the battery 8.
  • the battery 8 is accommodated in a battery case 9.
  • the layout of the battery 8 and the electric motor 6 is not limited to the example shown in FIG. 1 , and may be appropriately changed.
  • the electric motorcycle 1 includes a front fork 3 at the front and a front wheel 2 supported by the front fork 3 at its lower end.
  • the front fork 3 is rotatable about a steering shaft supported at the foremost portion of a body frame 7.
  • the electric motorcycle 1 has a seat 13, on which a driver can straddle, at its rear portion.
  • a steering bar 40 is fixed to the upper end of the front fork 3. As shown in FIG. 2 , a display device 50 is provided at the center of the steering bar 40. An accelerator grip 31, a right switch unit 40R, and a brake lever 45 are provided on the right side of the steering bar 40. A brake lever 44 and a left switch unit 40L are provided on the left side of the steering bar 40. One of the brake levers 44 and 45 is connected to a braking device for the front wheel 2, and the other of the brake levers 44 and 45 is connected to a braking device for the rear wheel 5.
  • the switch units 40R and 40L are provided with a plurality of switches including switches for the driver to select the running mode (a forward switch 41 and a reverse switch 42 described later) and switches for switching on/off the headlights (not shown).
  • the display device 50 has a mode indicator 51 that lights up according to the current operation mode.
  • the electric motorcycle 1 has, as its operation modes, a forward mode in which forward driving of the electric motorcycle 1 is permitted, a reverse mode in which reverse driving of the electric motorcycle 1 is permitted, and a standby mode in which both of the forward mode and the reverse mode are regulated.
  • the mode indicator 51 lights up in a predetermined form, and thereby notifies the driver of such information.
  • the mode indicator 51 is formed of, for example, LEDs (Light Emitting Diode).
  • the mode indicator 51 has an elongated shape in the left-right direction, but the shape may be appropriately changed.
  • the electric motorcycle 1 may have a speaker that generates sound in the reverse mode instead of the mode indicator 51 or together with the mode indicator 51.
  • the display device 50 has a vehicle speed region 52a for displaying the vehicle speed, a battery remaining amount region 52b for displaying the remaining amount of the battery 8, and a mode guide region 52c for indicating the current operation mode.
  • the display device 50 includes a display panel 52 (e.g., a liquid crystal display device) capable of displaying numbers, characters, and symbols. Each of the regions 52a, 52b, and 52c is, for example, a region defined in the display panel 52.
  • the mode guide region 52c displays the current operation mode, i.e., the forward mode or the reverse mode described above.
  • the electric motorcycle 1 may have a plurality of modes of the forward mode.
  • the electric motorcycle 1 may have three modes (ECO-mode, standard mode, and power mode) in which the magnitude of torque output by the electric motor 6 is different. In this case, not only the reverse mode but also these three modes may be displayed in the mode guide region 52c.
  • the electric motorcycle 1 has a control device 20 and a motor driving device 11.
  • the motor driving device 11 has an inverter, and uses the electric power received from the battery 8 to supply electric power corresponding to a command value (current command value) received from the control device 20 to the electric motor 6.
  • the control device 20 includes a CPU (Central Processing Unit) and a storage device 22, for example.
  • the control device 20 may be configured by a plurality of control devices each including a CPU and a storage device 22, for example, and capable of communicating with each other. Some of the functions of the control device may be implemented by FPGA (Field Programmable Gate Array).
  • the control device 20 controls the electric motor 6.
  • the control device 20 implements the forward movement and the reverse movement of the electric motorcycle 1 by the driving of the electric motor 6.
  • the driver can subtly adjust the position of the electric motorcycle 1 by using the reverse movement of the electric motorcycle 1 in a parking space, for example.
  • the control device 20 drives the electric motor 6 in the forward direction in the forward mode, and drives the electric motor 6 in the reverse direction in the reverse mode. Both the forward driving and the reverse driving are performed by one electric motor 6 in this manner, and thus the number of parts of the vehicle can be reduced.
  • the control device 20 is connected to the display device 50, and transmits information to be displayed on the display device 50 to the display device 50.
  • the display device 50 includes the mode indicator 51, the vehicle speed region 52a, the mode guide region 52c, and the battery remaining amount region 52b, for example.
  • the control device 20 transmits the vehicle speed detected by a vehicle speed sensor 15 (see FIG. 3 ) to be described later and the current operation mode to the display device 50. Further, the control device 20 receives information of the remaining amount of the battery 8 from the controller built in the battery 8, and transmits such information to the display device 50.
  • the electric motorcycle 1 includes a forward switch 41 (start switch), a reverse switch 42, a motor drive switch 43, a vehicle speed sensor 15, an accelerator operation sensor 31a, a side stand switch 14a, a right brake lever switch 45a, and a left brake lever switch 44a.
  • the control device 20 receives signals output from these sensors and switches, and determines whether the mode change is successful based on the signals.
  • the reverse switch 42 and the motor drive switch 43 are, for example, buttons provided on the steering bar 40 (see FIG. 2 ), and enter signals corresponding to button operations (pressing operation and release of pressing) to the control device 20. For example, when each of the switches 42 and 43 is pressed, an ON signal is output, and when each of the switches 42 and 43 is released, an OFF signal is output. As will be described later, the control device 20 drives the electric motorcycle 1 backward due to the operation of the two switches 42 and 43. Further, as will be described later in detail, the two switches 42 and 43 are disposed far apart from each other in the left-right direction.
  • the forward switch 41 is also a button provided on the steering bar 40 (see FIG. 2 ), for example, and outputs a signal corresponding to the button operation (pressing operation and release of pressing). For example, when the forward switch 41 is pressed, an ON signal is output, and when the forward switch 41 is released, an OFF signal is output.
  • the forward switch 41 is provided in the right switch unit 40R (see FIG. 2 ), for example, although may be provided in the left switch unit 40L.
  • the vehicle speed sensor 15 outputs a signal corresponding to the vehicle speed, for example, a signal corresponding to the rotation speed of the front wheel 2, and the control device 20 calculates the vehicle speed using the signal.
  • the accelerator operation sensor 31a is provided in the accelerator grip 31, and outputs a signal corresponding to the operation amount of the accelerator grip 31 (rotational position of the accelerator grip 31) (hereinafter, the operation amount of the accelerator grip 31 is referred to as an "accelerator operation amount").
  • the right brake lever switch 45a outputs a signal (e.g., ON signal and OFF signal) corresponding to the operation of the right brake lever 45
  • the left brake lever switch 44a outputs a signal (e.g., ON signal and OFF signal) corresponding to the operation of the left brake lever 44.
  • the brake lever switches 44a and 45a may be provided on the brake levers 44 and 45, or may be provided on the brake device.
  • the electric motorcycle 1 has a side stand 14 for supporting the electric motorcycle 1 in a standing state.
  • the side stand switch 14a outputs a signal corresponding to the position of the side stand 14, i.e., a position standing on the ground or a position away from the ground.
  • the control device 20 includes, as its functions, a mode selection unit 21A, a motor control unit 21B, and a display control unit 21C.
  • the motor control unit 21B has a forward driving control unit 21c and a reverse driving control unit 21d. These functions are implemented by CPUs that execute programs stored in the storage device 22 and FPGA.
  • the control device 20 has a forward mode, a reverse mode, and a standby mode as its operation modes.
  • the mode selection unit 21A selects a current mode from among the three modes based on the signals from the above-described sensors and switches.
  • the forward mode is a mode in which forward driving of the vehicle is permitted
  • the reverse mode is a mode in which reverse driving of the vehicle is permitted.
  • both the forward driving and the reverse driving of the vehicle are prohibited.
  • the control device 20 does not output a command value corresponding to the operation to the motor driving device 11.
  • the control device 20 does not output a command value corresponding to the operation to the motor driving device 11.
  • the mode selection unit 21A selects the standby mode. As shown in FIG. 5 , when an ON operation (i.e., a pressing operation) is applied to the forward switch 41 in the standby mode, the mode selection unit 21A selects the forward mode. The mode selection unit 21A maintains the forward mode even after the pressing on the forward switch 41 is released.
  • an ON operation i.e., a pressing operation
  • the transition from the standby mode to the forward mode may be conditioned on one or more of the following (ii) to (iv) in addition to (i) "the forward switch 41 is turned on". That is, the mode selection unit 21A may select the forward mode only when (i) is satisfied and one or more of (ii) to (iv) are satisfied.
  • the mode selection unit 21A releases the selection of the forward mode when a predetermined ending condition of the forward mode is satisfied. For example, when the side stand 14 is erected, the mode selection unit 21A ends the forward mode and selects the standby mode.
  • the forward driving control unit 21c controls the electric motor 6 in the forward mode. Specifically, the forward driving control unit 21c controls the electric motor 6 based on the vehicle speed and the accelerator operation amount detected through the vehicle speed sensor 15 and the accelerator operation sensor 31a, respectively.
  • the memory device 22 stores in advance a map for associating the electric power (command value) to be supplied to the electric motor 6 with the accelerator operation amount and the vehicle speed.
  • the forward driving control unit 21c refers to the map, and outputs a command value corresponding to the vehicle speed and the accelerator operation amount detected by the sensors 15 and 31a to the motor driving device 11.
  • the mode selection unit 21A selects the reverse mode.
  • the mode selection unit 21A selects the reverse mode only during the period in which the pressing operation on the reverse switch 42 is maintained. That is, the reverse mode is started at the same time as the pressing operation is applied to the reverse switch 42. At the same time as the pressing on the reverse switch 42 is released, the selection of the reverse mode is released. According to such processing, the driver can easily recognize the period during which the reverse mode is selected.
  • the mode selection unit 21A maintains the reverse mode as long as the pressing operation on the reverse switch 42 is maintained.
  • the reverse driving can be intermittently performed by, for example, intermittently operating the motor drive switch 43 while pressing the reverse switch 42.
  • the position of the electric motorcycle 1 can be subtly adjusted in a parking space, for example.
  • the mode selection unit 21A selects the standby mode instead of the forward mode. According to this, it is possible to prevent the vehicle from suddenly going forward after the reverse mode terminates. For example, it is possible to prevent the vehicle from starting the forward driving at the moment when the driver releases the pressing on the reverse switch 42 in a state where the accelerator grip 31 is unintentionally rotated.
  • the transition from the other modes (forward mode and standby mode) to the reverse mode may be conditioned on one or more of the following (vi) to (vii) in addition to (v) "pressing operation is applied to the reverse switch 42 ". That is, the mode selection unit 21A may select the reverse mode only when (v) is satisfied and one or more of (vi) to (viii) are satisfied.
  • the reverse driving control unit 21d drives the electric motor 6 to perform the reverse driving of the electric motorcycle 1.
  • the reverse driving control unit 21d executes the reverse driving of the electric motorcycle 1 only during a period in which the pressing operation on the motor drive switch 43 is maintained in the reverse mode, that is, in a state in which the pressing operation is applied to the reverse switch 42.
  • the reverse driving of the electric motorcycle 1 is started at the same time as the pressing operation is applied to the motor drive switch 43.
  • the reverse driving of the electric motorcycle 1 stops.
  • the process described above enables the driver to easily recognize the period during which the reverse driving of the vehicle is executed, and can subtly adjust the position of the vehicle in an easier way.
  • the control device 20 releases the selection of the reverse mode and ends the reverse driving of the electric motorcycle 1.
  • the stop of the reverse driving may be conditioned not only on (x) "the pressing of the motor drive switch 43 has been released” but also on (xi) "the rear vehicle speed has exceeded a threshold value" (where the threshold value is, for example, 0.5 to 3 km/h). That is, when either one of (x) and (xi) is satisfied, the reverse driving control unit 21d may stop the reverse driving.
  • the reverse driving control unit 21d rotates the electric motor 6 in a direction opposite to the forward driving control unit 21c, thereby reversing the electric motorcycle 1.
  • the reverse driving control unit 21d may control the torque of the electric motor 6 to be constant.
  • the reverse driving control unit 21d may output, to the motor driving device 11, a predetermined value as a command value of the electric power to be supplied from the motor driving device 11 to the electric motor 6.
  • the reverse driving control unit 21d may control the electric motor 6 based on the vehicle speed detected by the vehicle speed sensor 15 so that the vehicle speed becomes constant.
  • the control of the reverse driving control unit 21d is not limited to the example described here.
  • the torque output by the electric motor 6 in the reverse mode may not be constant.
  • the reverse driving control unit 21d may gradually decrease the torque output by the electric motor 6 in accordance with the elapsed time from the start of the pressing operation of the motor drive switch 43.
  • the control device 20 selects the reverse mode and drives the electric motorcycle 1 backward.
  • the operation of the two switches 42 and 43 is required for the reverse driving.
  • the selection of the reverse mode is automatically released.
  • the control device 20 releases the selection of the reverse mode even if there is no ON operation (e.g., pressing operation) on any of the switches.
  • the processing of the mode selection unit 21A and the reverse driving control unit 21d is not limited to the example described here.
  • the reverse driving control unit 21d may continue the reverse driving for a predetermined period of time from the time when the motor drive switch 43 is pressed, and stop the reverse driving when the predetermined period of time has elapsed. In this case, it is allowed for the driver to continuously press the motor drive switch 43 to continue the reverse driving for a predetermined period of time.
  • the mode selection unit 21A may select the reverse mode when one or more of other operating members are operated instead of the reverse switch 42.
  • the reverse switch 42 and the motor drive switch 43 are, for example, momentary type switches. That is, each of the switches 42 and 43 has an elastic member to bias a movable portion toward an initial position. While the driver presses the movable portion against the force of the elastic member, the switches 42 and 43 are turned on. When the driver releases the finger from the movable portion, the movable portion returns to the initial position by the force of the elastic member, and the switches 42 and 43 become turned off.
  • the movable portions of the switches 42 and 43 are, for example, buttons that can be pressed in a direction perpendicular to the plane on which the switches 42 and 43 are provided. Alternatively, the movable portions may be slidable in a direction parallel to the plane in which the switches 42, 43 are provided. As still another example, the reverse switch 42 and the motor drive switch 43 may be buttons displayed on the screen of the display device.
  • the reverse switch 42 and the motor drive switch 43 are disposed apart from each other in the left-right direction. Consequently, the driver supports two positions apart from each other during the reverse driving, so that the attitude stability of the vehicle body can be improved.
  • the reverse switch 42 and the motor drive switch 43 are disposed on opposite sides of the center of the steering bar 40 in the left-right direction.
  • the display device 50 is positioned between the reverse switch 42 and the motor drive switch 43. Consequently, the driver supports the right and left portions of the steering bar 40, so that the attitude stability of the vehicle body can be improved.
  • the reverse switch 42 is provided on the left side (specifically, the left switch unit 40L) of the steering bar 40, and the motor drive switch 43 is provided on the right side (specifically, the right switch unit 40R) of the steering bar 40.
  • the reverse switch 42 may be provided on the right side of the steering bar 40, and a motor drive switch 43 may be provided on the left side of the steering bar 40.
  • the display control unit 21C displays the currently selected mode on the display device 50.
  • the display device 50 includes, for example, the mode guide region 52c and the mode indicator 51.
  • the display control unit 21C turns on the mode indicator 51 in a predetermined manner (e.g., red, which is a warning color), and displays a mark indicating "reverse" in the mode guide region 52c.
  • the display control unit 21C turns off the mode indicator 51 or turns on the mode indicator 51 in a manner different from the reverse mode.
  • the display control unit 21C displays, for example, a mark indicating "forward" in the mode guide region 52c.
  • the display control unit 21C may display a mark representing the mode in the mode guide region 52c.
  • FIG. 6 is a flowchart showing an example of processing in the reverse mode. The process shown in the FIG. 6 starts when the reverse switch 42 is pressed.
  • the mode selection unit 21A determines whether the vehicle speed is smaller than a threshold value close to 0km/h (S101). When the vehicle speed is equal to or higher than the threshold value, the control device 20 ends the processing shown in FIG. 6 . When the vehicle speed is smaller than the threshold value in the S101, the mode selection unit 21A selects the reverse mode (S102). At this time, the display control unit 21C displays the selection of the reverse mode on the display device 50, specifically, the mode indicator 51 and the mode guide region 52c. Next, the reverse driving control unit 21d determines whether an ON operation (pressing operation) is applied to the motor drive switch 43 (S103).
  • the reverse driving control unit 21d rotates the electric motor 6 in the reverse direction to perform the reverse driving of the electric motorcycle 1 (S104). Subsequently, the mode selection unit 21A determines whether the ON operation is still being performed on the reverse switch 42 (S105). If the reverse switch 42 is still on, the control unit 20 returns to the S103 and executes the subsequent process. When the ON operation is not applied to the motor drive switch 43 in S103, the mode selection unit 21A determines whether the ON operation is applied to the reverse switch 42 without the drive of the electric motor 6 by the reverse driving control unit 21d being executed (S105).
  • the mode selection unit 21A releases the selection of the reverse mode and selects the standby mode (S106).
  • the display control unit 21C displays the fact that the standby mode has been selected on the display device 50. The control device 20 then terminates the processing.
  • FIG. 7 is a flowchart showing an example of processing in the forward mode. The process shown in the FIG. 7 starts when the forward switch 41 is pressed.
  • the mode selection unit 21A determines whether the present mode is the standby mode (S201). If the present mode is not the standby mode in S201, the controller 20 terminates the processing. If the present mode is the standby mode in S201, the mode selection unit 21A selects the forward mode and sets a forward mode flag recorded in the storage device 22 to ON (S202). At this time, the display control unit 21C displays the selection of the forward mode on the display device 50, specifically, the mode indicator 51 and the mode guide region 52c. Next, the forward driving control unit 21c performs normal running control.
  • the forward driving control unit 21c controls the electric motor 6 based on the vehicle speed and the accelerator operation amount respectively detected through the vehicle speed sensor 15 and the accelerator operation sensor 31a (S203).
  • the mode selection unit 21A determines whether the ending condition of the forward mode is satisfied (S204). For example, the mode selection unit 21A determines whether the side stand 14 is erected based on the output of the side stand switch 14a, and whether the reverse switch 42 is turned on. When the ending condition of the forward mode is satisfied in the S204, the mode selection unit 21A releases the selection of the forward mode, sets the forward mode flag recorded in the storage device 22 to OFF (S205), and the control device 20 terminates the processing related to the forward mode. When the ending condition of the forward mode is not satisfied in the S204, the mode selection unit 21A maintains the forward mode, and the forward driving control unit 21c continues the normal running control (S203).
  • FIG. 8 is a block diagram showing a configuration of an electric motorcycle according to a variation of the electric vehicle proposed in the present disclosure.
  • FIG. 9 is a diagram showing mode transition in this variation.
  • the same elements as those shown in FIG. 3 etc. are denoted by the same reference numerals.
  • description will be made focusing on points different from the example shown in FIG. 3 etc. Items that are not described may be the same as in the example shown in FIG. 3 etc.
  • the electric motorcycle in the example shown here has one reverse switch 142 instead of the reverse switch 42 and the motor drive switch 43 described above.
  • the reverse switch 142 is provided on the left portion (specifically, the left switch unit 40L) of the steering bar 40, but may be provided on the right portion (specifically, the right switch unit 40R) of the steering bar 40.
  • the reverse switch 142 is a momentary type switch similar to the reverse switch 42 described above.
  • the mode selection unit 21A selects the reverse mode when a first state and a second state continue for a predetermined time, wherein the first state is an ON state of the reverse switch 142 in which the reverse switch 142 is subjected to the ON operation (pressing operation), and the second state is an ON state of the brake lever switch 44a in which the left brake lever 44 is held by hand.
  • the first state is an ON state of the reverse switch 142 in which the reverse switch 142 is subjected to the ON operation (pressing operation)
  • the second state is an ON state of the brake lever switch 44a in which the left brake lever 44 is held by hand.
  • the reverse switch 142 and the brake lever 44 are positioned in the same direction (left direction) with respect to the center of the steering bar 40.
  • the right brake lever 45 may be used instead of the left brake lever 44. That is, the mode selection unit 21A may select the reverse mode when the first state in which the reverse switch 142 receives the ON operation (pressing operation) and the second state in which the right brake lever 45 is gripped (the ON state of the brake lever switch 45a) continue for a predetermined time.
  • the mode selection unit 21A may select the reverse mode when the two switches 142 and 44a are turned off. That is, after the ON state of the two switches 142 and 44a continues for the predetermined time, the mode selection unit 21A may select the reverse mode when the pressing of the reverse switch 142 is released and the grip of the left brake lever 44 is released.
  • one or more of the following (xvi) to (xviii) may be conditioned for the transition from another mode (forward mode and standby mode) to the reverse mode. That is, the mode selection unit 21A may select the reverse mode only when (xv) is satisfied and one or more of (xvi) to (xviii) are satisfied.
  • the reverse driving control unit 21d drives the electric motor 6 to perform the reverse driving of the electric motorcycle 1 when the ON operation (pressing operation) is again applied to the reverse switch 142.
  • the reverse driving control unit 21d performs the reverse driving of the electric motorcycle only during the period in which the pressing operation on the reverse switch 142 is maintained in the reverse mode.
  • the reverse driving control unit 21d stops the reverse driving of the electric motorcycle 1, and at the same time, the mode selection unit 21A releases the selection of the reverse mode and selects the standby mode.
  • the control device 20 selects the reverse mode and drives the electric motorcycle 1 backward.
  • the process that the operation of the reverse switch 142 and the operation of the brake lever 44 are required for the reverse driving prevents the reverse driving from being unintentionally selected by the driver.
  • the selection of the reverse mode is automatically released when the predetermined operation (pressing operation) on the reverse switch 142 and the predetermined operation (grip operation) on the brake lever 44 are no longer performed. As such, it is possible to prevent the driver from being lost as to whether the electric motorcycle 1 is still in the reverse mode.
  • FIG. 10 is a flowchart showing an example of processing in the reverse mode. The processing shown in the FIG. 10 starts when the reverse switch 142 is pressed.
  • the mode selection unit 21A determines whether the vehicle speed detected by the vehicle speed sensor 15 is smaller than a threshold value (S301). When the vehicle speed is equal to or higher than the threshold value in S301, the control device 20 ends the processing without shifting to the reverse mode. When the vehicle speed is smaller than the threshold value in S301, the mode selection unit 21A waits until the ON state of the brake lever switch 44a and the ON state of the reverse switch 142 continue for a predetermined period (S302). When the duration of these ON states reaches the predetermined time, the mode selection unit 21A selects the reverse mode (S303) and sets the reverse mode flag recorded in the storage device 22 to ON.
  • the mode selection unit 21A may select the reverse mode (S303). After the reverse mode is selected in S303, the reverse driving control unit 21d (see FIG. 4 ) waits until the reverse switch 142 is turned on again (S304). When the reverse switch 142 is turned on, the reverse driving control unit 21d rotates the electric motor 6 in the reverse direction to perform the reverse driving of the electric motorcycle (S305). Subsequently, the reverse driving control unit 21d determines whether the ON operation on the reverse switch 142 is released (S306).
  • the reverse driving control unit 21d ends the reverse driving of the electric motorcycle, and the mode selection unit 21A releases the selection of the reverse mode (S307).
  • the mode selection unit 21A sets the reverse mode flag recorded in the storage device 22 to OFF, and the processing proceeds to the standby mode.
  • the electric vehicle proposed in the present disclosure is not limited to the electric motorcycle 1 described above.
  • the reverse switch 42 and the motor drive switch 43 may be disposed in the same direction with respect to the center of the steering bar 40 in the left-right direction.
  • the second operating member may be an operating member that outputs an analog signal corresponding to the amount of pressing, instead of the motor drive switch 43 that outputs only the ON signal and the OFF signal.
  • the control device 20 may control the electric motor 6 so that the electric motor 6 outputs a torque corresponding to the pressing amount of the second operating member.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Control Of Transmission Device (AREA)
  • Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)
  • Mechanical Control Devices (AREA)
EP20177141.7A 2019-05-29 2020-05-28 Elektrofahrzeug Active EP3744560B1 (de)

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WO2023170776A1 (ja) * 2022-03-08 2023-09-14 武蔵精密工業株式会社 モータ出力制御装置および電動モータの出力制御方法

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JP7517797B2 (ja) 2024-07-17
JP2020195239A (ja) 2020-12-03
TW202043080A (zh) 2020-12-01
EP3744560B1 (de) 2022-06-08
TWI738364B (zh) 2021-09-01

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